Electrophoresis is described in the chapter here,

电泳法的描述在这一章这里
I'll just describe it briefly.

我只是大致解释一下
If you have DNA fragments,

如果你有DNA片段
so this is DNA that you've cut up into fragments

例如有一段你用限制酶
using restriction enzymes for example.

切割成片段的DNA
You load them into the top of a gel and a gel is -

你把它安置在一段凝胶上凝胶是--
in this case it's synthetic polymer gel but it looks very much like Jell-O.

这种合成凝胶聚合物看上去很像吉露果冻
I'm sure some of you have dealt with electrophoresis gels in the past and

我相信在座肯定有些已经接触过电泳凝胶
it's really just a slab of something like Jell-O

真的挺像一块板状果冻的
where you can put a sample at one end of the Jell-O,

你可以把一段样本放在"果冻"的一端
your sample of fragmented DNA.

你的DNA片段样本
Now you apply electrical charge across that Jell-O.

然后在"果冻"两边加上电压